To professionally publish an e-book in 2024, first finalize your content and ensure rigorous editing. Create a compelling cover design and format your e-book for popular platforms. Consider self-publishing platforms such as Amazon Kindle Direct Publishing (KDP). Use Amazon Publishing Services for additional assistance, such as editorial and marketing. Optimize your book's metadata with relevant keywords and categories to increase visibility. Create a comprehensive marketing plan that includes social media and advertising campaigns. Engage your target audience and request feedback. Stay current on industry developments and adjust your strategy to the changing landscape to ensure a successful and professional e-book launch in 2024.